Question

1. A 43.9 g sample of an unknown metal is found by college students panning for...

1. A 43.9 g sample of an unknown metal is found by college students panning for gold in the Charles River. They heat the sample in an oven set at 135.0 °C and immediately plunge the unknown metal into 254 g of water at 39.0 °C. Assuming that no heat is lost to the surroundings, what is the specific heat capacity of the unknown metal if the final temperature of the system is 40.5 °C?

2.
The sample is not gold.
What metal might it be?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An irregular lump of an unknown metal has a measured density of 5.07 g/mL. The metal...
An irregular lump of an unknown metal has a measured density of 5.07 g/mL. The metal is heated to a temperature of 157 °C and placed in a graduated cylinder filled with 25.0 mL of water at 25.0 °C. After the system has reached thermal equilibrium, the volume in the cylinder is read at 30.5 mL, and the temperature is recorded as 45.5 °C. What is the specific heat of the unknown metal sample? Assume no heat is lost to...
An irregular lump of an unknown metal has a measured density of 3.05 g/mL. The metal...
An irregular lump of an unknown metal has a measured density of 3.05 g/mL. The metal is heated to a temperature of 171 °C and placed in a graduated cylinder filled with 25.0 mL of water at 25.0 °C. After the system has reached thermal equilibrium, the volume in the cylinder is read at 34.3 mL, and the temperature is recorded as 48.7 °C. What is the specific heat of the unknown metal sample? Assume no heat is lost to...
An irregular lump of an unknown metal has a measured density of 5.63 g/mL. The metal...
An irregular lump of an unknown metal has a measured density of 5.63 g/mL. The metal is heated to a temperature of 167 °C and placed in a graduated cylinder filled with 25.0 mL of water at 25.0 °C. After the system has reached thermal equilibrium, the volume in the cylinder is read at 31.9 mL, and the temperature is recorded as 39.5 °C. What is the specific heat of the unknown metal sample? Assume no heat is lost to...
An irregular lump of an unknown metal has a measured density of 5.71 g/mL. The metal...
An irregular lump of an unknown metal has a measured density of 5.71 g/mL. The metal is heated to a temperature of 155 °C and placed in a graduated cylinder filled with 25.0 mL of water at 25.0 °C. After the system has reached thermal equilibrium, the volume in the cylinder is read at 32.9 mL, and the temperature is recorded as 47.4 °C. What is the specific heat of the unknown metal sample? Assume no heat is lost to...
In the laboratory, you are given a 18.5 g sample of an unknown metal. The sample...
In the laboratory, you are given a 18.5 g sample of an unknown metal. The sample is irregular in shape, conducts heat and electricity well, and sinks in water. The sample is placed into a partially filled graduated cylinder and displaces 2.06 mL of water. The sample is then heated to 160℃ with a Bunsen burner. The hot metal is placed into a calorimeter filled with exactly 50.0 g of water. The water temperature rises from 20℃ to 24.6℃ ....
If 1495 J of heat is needed to raise the temperature of a 356 g sample...
If 1495 J of heat is needed to raise the temperature of a 356 g sample of a metal from 55.0°C to 66.0°C, what is the specific heat capacity of the metal? ___J/g•°C 2.80 kJ of heat is added to a slug of gold and a separate 2.80 kJ of heat is added to a slug of lead. The heat capacity of the gold slug is 337J/°C while the heat capacity of the lead slug is 545 J/°C. If the...
A sample representing 60.0g of iron has an inital temperature of 250 degree celsius and 60.0g...
A sample representing 60.0g of iron has an inital temperature of 250 degree celsius and 60.0g of gold that has an inital temperature of 45.0 degree celsius are b rought into contact with one another. Assuming no heat is lost to the surroundings, what will be the temperature when two metals reach thermal equilibrium? The specific heat capacity of iron=0.449J/g/C and gold= 0.128J/G/C
A student places a 72.0 gram sample of metal at an initial temperature of 100.˚C in...
A student places a 72.0 gram sample of metal at an initial temperature of 100.˚C in a coffee cup calorimeter that contains 40.0 grams of water at an initial temperature of 25.0 ˚C. After addition of the metal, the temperature of the water / metal mixture was monitored using a temperature probe. The highest temperature of the water / solid combination was found to be 35.0 ˚C. (The specific heat of water = 4.18 J / g ˚C ) Do...
A 275 g sample of nickel at 100.0ºC is placed in 100.0 mL of water at...
A 275 g sample of nickel at 100.0ºC is placed in 100.0 mL of water at 22.0ºC. What is the final temperature of the mixture, assuming no heat is lost to the surroundings? The specific heat capacity of Ni is 0.444 J/(g.ºC). The density of water is 1.00 g/mL and the specific heat capacity of water is 4.18 J/(g.ºC.
1. A 78.0 g piece of metal at 89.0°C is placed in 125 g of water...
1. A 78.0 g piece of metal at 89.0°C is placed in 125 g of water at 21.0°C contained in a calorimeter. The metal and water come to the same temperature at 27.0°C. - How much heat (in J) did the metal give up to the water? (Assume the specific heat of water is 4.18 J/g·°C across the temperature range.) - What is the specific heat (in J/g·°C) of the metal? 2. A 0.529 g sample of KCl is added...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT